# ALAS2023-2025-1209: microcode_ctl security update

ALAS2023-2025-1209, released September 23, 2025, fixes 5 CVEs in microcode_ctl (version 2:2.1-53.amzn2023.0.14). None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/alas2023-2025-1209
- Platform: Linux
- Released: Sep 23, 2025
- Priority: Routine (Closes 5 CVEs, none high severity)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://alas.aws.amazon.com/AL2023/ALAS-2025-1209.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [microcode_ctl](https://patchblox.com/security/data/product/linux/microcode-ctl.md) | amzn 2023 | 2:2.1-53.amzn2023.0.14 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-22839](https://patchblox.com/security/data/cve/CVE-2025-22839.md) | Routine | intel-microcode: Insufficient granularity of access control in the OOB-MSM for some Intel(R)Xeon(R) 6 Scalable processors may allow a... | n/a | 0.0020 |  |
| [CVE-2025-22889](https://patchblox.com/security/data/cve/CVE-2025-22889.md) | Routine | intel-microcode: Improper handling of overlap between protected memory ranges for someIntel(R) Xeon(R) 6 processor with Intel(R) TDX m... | n/a | 0.0016 |  |
| [CVE-2025-26403](https://patchblox.com/security/data/cve/CVE-2025-26403.md) | Routine | intel-microcode: Out-of-bounds write in the memory subsystem for some Intel(R) Xeon(R) 6processors when using Intel(R) SGX or Intel(R)... | n/a | 0.0015 |  |
| [CVE-2025-32086](https://patchblox.com/security/data/cve/CVE-2025-32086.md) | Routine | intel-microcode: Improperly implemented security check for standard in the DDRIOconfiguration for some Intel(R) Xeon(R) 6 Processors w... | n/a | 0.0015 |  |
| [CVE-2025-22840](https://patchblox.com/security/data/cve/CVE-2025-22840.md) | Routine | intel-microcode: Sequence of processor instructions leads to unexpected behavior for someIntel(R) Xeon(R) 6 Scalable processors may al... | n/a | 0.0015 |  |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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